library ieee;
use ieee.std_logic_1164.all;

entity siu_top_core is

  port (
    -- to/from TLK2501
    tx_clk              : in  std_logic;
    tx_en               : out std_logic;
    tx_er               : out std_logic;
    txd                 : out std_logic_vector (15 downto 0);

    rx_clk              : in  std_logic;
    rx_dv               : in  std_logic;
    rx_er               : in  std_logic;
    rxd                 : in  std_logic_vector (15 downto 0);
    -- static signals
    prbsen              : out std_logic;
    loopen              : out std_logic;
    enable              : out std_logic;
    lckrefn             : out std_logic;

    -- 32 bit bus
    fbDin               : in  std_logic_vector (31 downto 0);
    fbDout              : out std_logic_vector (31 downto 0);
    fbIEN               : in  std_logic;
    fbOEN               : out std_logic;
    fbICTRL             : in  std_logic;
    fbOCTRL             : out std_logic;
    fiBEN_N             : out std_logic;
    fiDIR               : out std_logic;
    fiLF_N              : out std_logic;
    foBSY_N             : in  std_logic;
    foCLK               : in  std_logic;

    --
    ot_los              : in  std_logic;
    ot_td               : out std_logic;
    ot_tf               : in  std_logic;
    --
    led1                : out std_logic;
    led2                : out std_logic;
    led3                : out std_logic;         -- GREENLED
    led4                : out std_logic;         -- REDLED

    pm_dout             : in  std_logic;
    pm_ncs              : out std_logic;
    pm_clk              : out std_logic;
    i2c_scl             : out std_logic;
    i2c_sda_i           : in  std_logic;
    i2c_sda_o           : out std_logic;
    i2c_sda_e           : out std_logic;
    pwr_good            : in  std_logic
  );

end siu_top_core;


architecture test of siu_top_core is

signal leds : std_logic_vector(1 to 4);

begin
    TX_ER   <= '0';
    LCKREFN <= '1';
    ENABLE  <= '1';
    LOOPEN  <= '0';


    prbsen  <= '1'; -- check pseudorandom
    led1 <= leds(1);

    process(tx_clk)
    begin
        if rising_edge(tx_clk) then

    end process;

end;